autocompletetextview并不意味着我想要什么

问题描述

我加载大约20,000串从XML，除了它需要很多的时间，直到应用程序真的让我一个建议，当我输入 CRA 它让我看到第一个建议的Valea Crabului 和我有克拉约瓦中的字符串，但以后建议。

I am loading around 20,000 strings from a xml, besides that it takes very much time until the app really makes me a suggestion, when I type Cra it shows me the first suggestion Valea Crabului and i have Craiova in the strings but that is suggested later.

如何能 AutoCompleteTextView 建议我只整个单词相匹配的话？

How can a AutoCompleteTextView suggest me only the words that match the whole word ?

推荐答案

如果您使用的是 ArrayAdapter 您 AutoCompleteTextView ，比这里你可以看到 ArrayAdapter https://github.com/android/platform_frameworks_base/blob/master/core/java/android/widget/ArrayAdapter.java

If you are using ArrayAdapter for your AutoCompleteTextView, than here you can see default implementation of the filter for ArrayAdapter https://github.com/android/platform_frameworks_base/blob/master/core/java/android/widget/ArrayAdapter.java

从内部类 ArrayFilter 的 ArrayAdapter ：

for (int i = 0; i < count; i++) {
                final T value = values.get(i);
                final String valueText = value.toString().toLowerCase();

                // First match against the whole, non-splitted value
                if (valueText.startsWith(prefixString)) {
                    newValues.add(value);
                } else {
                    final String[] words = valueText.split(" ");
                    final int wordCount = words.length;

                    // Start at index 0, in case valueText starts with space(s)
                    for (int k = 0; k < wordCount; k++) {
                        if (words[k].startsWith(prefixString)) {
                            newValues.add(value);
                            break;
                        }
                    }
                }
            }

您要求您进行相关看到过滤器不匹配的排序项目，你必须写自己的过滤器为您的适配器。

You see filter doesn't sort matched items by relevance you require, you have to write your own filter for your adapter.

而不是

                // First match against the whole, non-splitted value
                if (valueText.startsWith(prefixString)) {
                    newValues.add(value);
                } else {

您可能需要使用

                // First match against the whole, non-splitted value
                if (valueText.startsWith(prefixString)) {
                    newValues.add(0, value);
                } else {

让您的过滤器将增加开始与结果最相关的过滤器结果的顶部您建议的字符串值。

so your filter will add values starting with your suggested string at the top of results as the most relevant filter result.

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